<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>模块标签及定义</title>
</head>
<body>
  <script type="module">
    import './moduleA.js';
  </script>
  <script type="module" src="./moduleB.js"></script>
</body>
</html>